Gas powered swabbing device

Pumps – Drilled well free piston-type pump

Patent

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Details

F04B 4712

Patent

active

040701344

ABSTRACT:
Means for utilizing natural gas pressure to operate a free-floating pressure-sensitive swab to automatically remove fluids from well casings. Also included are means to reduce free-fall speed of the swab, means to manually release pressure under swab in case of sticking, and means to provide a stand at the bottom of the well casing.

REFERENCES:
patent: 1836871 (1931-12-01), Ricker
patent: 1846000 (1932-02-01), Fletcher
patent: 1919547 (1933-07-01), Fletcher
patent: 2267902 (1941-12-01), Eddins

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